Methodology: We used multiple public cancer bioinformatics platforms including the Tumor Immune Estimation Resource (TIMER), Gene Expression Profiling Interactive Analysis (GEPIA), and the University of ALabama at Birmingham CANcer Data Analysis Portal (UALCAN), Kaplan-Meier (KM-Plotter), CbioPortal and Gene Expression Omnibus (GEO) to evaluate PTGER1 expression, methylation, immune infiltration, genetic alteration and survival across tumor types. The gene discussed is PTGER1; the disease is cancer.